/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file    usart.c
  * @brief   This file provides code for the configuration
  *          of the USART instances.
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2022 STMicroelectronics.
  * All rights reserved.
  *
  * 注意事项：
	*				  1.使用时，先在main中调用bspUartInit函数  然后若需要串口接收的时候则调用uartReceiveStart函数
	*         2.可以直接使用printf sprintf sscanf等函数			
  * 				3.当需要串口接收的时候，有两种模式可选择 ，一种是中断接收模式（IT） ，一种是 DMA接收模式
  * 				4.这两种模式的选择需要通过更改头文件中宏定义“RECEIVE_MODE”的值来选择
  *					5.IT模式中进入中断的条件字节数已经被写死，一个字节进入一次中断
	*					6.IT模式中，接收串口信息的数组被写死，为	itRxBuff[];
	*					7. dma接收模式中，需要替换it.c中的相关内容
  ******************************************************************************
  */
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "usart.h"

/* USER CODE BEGIN 0 */
uint8_t itRxBuff[RXBUFFERSIZE];   //IT接收数据存放处
uint8_t aRxBuff[1];			//接收中断缓冲
uint8_t Uart1_Rx_Cnt = 0;		//接收缓冲计数

uint8_t * dmaRxBuff1=NULL;
uint8_t * dmaRxBuff2=NULL;
uint8_t total_length=255;

/* USER CODE END 0 */

UART_HandleTypeDef huart1;
UART_HandleTypeDef huart2;
DMA_HandleTypeDef hdma_usart1_rx;
DMA_HandleTypeDef hdma_usart1_tx;
DMA_HandleTypeDef hdma_usart2_rx;
DMA_HandleTypeDef hdma_usart2_tx;

/* USART1 init function */

void MX_USART1_UART_Init(void)
{

  /* USER CODE BEGIN USART1_Init 0 */

  /* USER CODE END USART1_Init 0 */

  /* USER CODE BEGIN USART1_Init 1 */

  /* USER CODE END USART1_Init 1 */
  huart1.Instance = USART1;
  huart1.Init.BaudRate = 115200;
  huart1.Init.WordLength = UART_WORDLENGTH_8B;
  huart1.Init.StopBits = UART_STOPBITS_1;
  huart1.Init.Parity = UART_PARITY_NONE;
  huart1.Init.Mode = UART_MODE_TX_RX;
  huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
  huart1.Init.OverSampling = UART_OVERSAMPLING_16;
  if (HAL_UART_Init(&huart1) != HAL_OK)
  {
    Error_Handler();
		
  }
  /* USER CODE BEGIN USART1_Init 2 */

  /* USER CODE END USART1_Init 2 */

}
/* USART2 init function */

void MX_USART2_UART_Init(void)
{

  /* USER CODE BEGIN USART2_Init 0 */

  /* USER CODE END USART2_Init 0 */

  /* USER CODE BEGIN USART2_Init 1 */

  /* USER CODE END USART2_Init 1 */
  huart2.Instance = USART2;
  huart2.Init.BaudRate = 115200;
  huart2.Init.WordLength = UART_WORDLENGTH_8B;
  huart2.Init.StopBits = UART_STOPBITS_1;
  huart2.Init.Parity = UART_PARITY_NONE;
  huart2.Init.Mode = UART_MODE_TX_RX;
  huart2.Init.HwFlowCtl = UART_HWCONTROL_NONE;
  huart2.Init.OverSampling = UART_OVERSAMPLING_16;
  if (HAL_UART_Init(&huart2) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN USART2_Init 2 */

  /* USER CODE END USART2_Init 2 */

}

void HAL_UART_MspInit(UART_HandleTypeDef* uartHandle)
{

  GPIO_InitTypeDef GPIO_InitStruct = {0};
  if(uartHandle->Instance==USART1)
  {
  /* USER CODE BEGIN USART1_MspInit 0 */

  /* USER CODE END USART1_MspInit 0 */
    /* USART1 clock enable */
    __HAL_RCC_USART1_CLK_ENABLE();

    __HAL_RCC_GPIOA_CLK_ENABLE();
    /**USART1 GPIO Configuration
    PA9     ------> USART1_TX
    PA10     ------> USART1_RX
    */
    GPIO_InitStruct.Pin = GPIO_PIN_9;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

    GPIO_InitStruct.Pin = GPIO_PIN_10;
    GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

    /* USART1 DMA Init */
    /* USART1_RX Init */
    hdma_usart1_rx.Instance = DMA1_Channel5;
    hdma_usart1_rx.Init.Direction = DMA_PERIPH_TO_MEMORY;
    hdma_usart1_rx.Init.PeriphInc = DMA_PINC_DISABLE;
    hdma_usart1_rx.Init.MemInc = DMA_MINC_ENABLE;
    hdma_usart1_rx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
    hdma_usart1_rx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
    hdma_usart1_rx.Init.Mode = DMA_NORMAL;
    hdma_usart1_rx.Init.Priority = DMA_PRIORITY_HIGH;
    if (HAL_DMA_Init(&hdma_usart1_rx) != HAL_OK)
    {
      Error_Handler();
    }

    __HAL_LINKDMA(uartHandle,hdmarx,hdma_usart1_rx);

    /* USART1_TX Init */
    hdma_usart1_tx.Instance = DMA1_Channel4;
    hdma_usart1_tx.Init.Direction = DMA_MEMORY_TO_PERIPH;
    hdma_usart1_tx.Init.PeriphInc = DMA_PINC_DISABLE;
    hdma_usart1_tx.Init.MemInc = DMA_MINC_ENABLE;
    hdma_usart1_tx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
    hdma_usart1_tx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
    hdma_usart1_tx.Init.Mode = DMA_NORMAL;
    hdma_usart1_tx.Init.Priority = DMA_PRIORITY_MEDIUM;
    if (HAL_DMA_Init(&hdma_usart1_tx) != HAL_OK)
    {
      Error_Handler();
    }

    __HAL_LINKDMA(uartHandle,hdmatx,hdma_usart1_tx);

    /* USART1 interrupt Init */
    HAL_NVIC_SetPriority(USART1_IRQn, 0, 0);
    HAL_NVIC_EnableIRQ(USART1_IRQn);
  /* USER CODE BEGIN USART1_MspInit 1 */

  /* USER CODE END USART1_MspInit 1 */
  }
  else if(uartHandle->Instance==USART2)
  {
  /* USER CODE BEGIN USART2_MspInit 0 */

  /* USER CODE END USART2_MspInit 0 */
    /* USART2 clock enable */
    __HAL_RCC_USART2_CLK_ENABLE();

    __HAL_RCC_GPIOA_CLK_ENABLE();
    /**USART2 GPIO Configuration
    PA2     ------> USART2_TX
    PA3     ------> USART2_RX
    */
    GPIO_InitStruct.Pin = GPIO_PIN_2;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

    GPIO_InitStruct.Pin = GPIO_PIN_3;
    GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

    /* USART2 DMA Init */
    /* USART2_RX Init */
    hdma_usart2_rx.Instance = DMA1_Channel6;
    hdma_usart2_rx.Init.Direction = DMA_PERIPH_TO_MEMORY;
    hdma_usart2_rx.Init.PeriphInc = DMA_PINC_DISABLE;
    hdma_usart2_rx.Init.MemInc = DMA_MINC_ENABLE;
    hdma_usart2_rx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
    hdma_usart2_rx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
    hdma_usart2_rx.Init.Mode = DMA_NORMAL;
    hdma_usart2_rx.Init.Priority = DMA_PRIORITY_HIGH;
    if (HAL_DMA_Init(&hdma_usart2_rx) != HAL_OK)
    {
      Error_Handler();
    }

    __HAL_LINKDMA(uartHandle,hdmarx,hdma_usart2_rx);

    /* USART2_TX Init */
    hdma_usart2_tx.Instance = DMA1_Channel7;
    hdma_usart2_tx.Init.Direction = DMA_MEMORY_TO_PERIPH;
    hdma_usart2_tx.Init.PeriphInc = DMA_PINC_DISABLE;
    hdma_usart2_tx.Init.MemInc = DMA_MINC_ENABLE;
    hdma_usart2_tx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
    hdma_usart2_tx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
    hdma_usart2_tx.Init.Mode = DMA_NORMAL;
    hdma_usart2_tx.Init.Priority = DMA_PRIORITY_MEDIUM;
    if (HAL_DMA_Init(&hdma_usart2_tx) != HAL_OK)
    {
      Error_Handler();
    }

    __HAL_LINKDMA(uartHandle,hdmatx,hdma_usart2_tx);

    /* USART2 interrupt Init */
    HAL_NVIC_SetPriority(USART2_IRQn, 0, 0);
    HAL_NVIC_EnableIRQ(USART2_IRQn);
  /* USER CODE BEGIN USART2_MspInit 1 */

  /* USER CODE END USART2_MspInit 1 */
  }
}

void HAL_UART_MspDeInit(UART_HandleTypeDef* uartHandle)
{

  if(uartHandle->Instance==USART1)
  {
  /* USER CODE BEGIN USART1_MspDeInit 0 */

  /* USER CODE END USART1_MspDeInit 0 */
    /* Peripheral clock disable */
    __HAL_RCC_USART1_CLK_DISABLE();

    /**USART1 GPIO Configuration
    PA9     ------> USART1_TX
    PA10     ------> USART1_RX
    */
    HAL_GPIO_DeInit(GPIOA, GPIO_PIN_9|GPIO_PIN_10);

    /* USART1 DMA DeInit */
    HAL_DMA_DeInit(uartHandle->hdmarx);
    HAL_DMA_DeInit(uartHandle->hdmatx);

    /* USART1 interrupt Deinit */
    HAL_NVIC_DisableIRQ(USART1_IRQn);
  /* USER CODE BEGIN USART1_MspDeInit 1 */

  /* USER CODE END USART1_MspDeInit 1 */
  }
  else if(uartHandle->Instance==USART2)
  {
  /* USER CODE BEGIN USART2_MspDeInit 0 */

  /* USER CODE END USART2_MspDeInit 0 */
    /* Peripheral clock disable */
    __HAL_RCC_USART2_CLK_DISABLE();

    /**USART2 GPIO Configuration
    PA2     ------> USART2_TX
    PA3     ------> USART2_RX
    */
    HAL_GPIO_DeInit(GPIOA, GPIO_PIN_2|GPIO_PIN_3);

    /* USART2 DMA DeInit */
    HAL_DMA_DeInit(uartHandle->hdmarx);
    HAL_DMA_DeInit(uartHandle->hdmatx);

    /* USART2 interrupt Deinit */
    HAL_NVIC_DisableIRQ(USART2_IRQn);
  /* USER CODE BEGIN USART2_MspDeInit 1 */

  /* USER CODE END USART2_MspDeInit 1 */
  }
}

/* USER CODE BEGIN 1 */

/**
   * @brief 串口初始化
	 * @param uart_id: USER_UART2 开启USART2  USER_UART1 开启USART1
   */

void bspUartInit(uint8_t uart_id)
{
	if(uart_id==USER_UART2)
	{
		  /* DMA controller clock enable */
			__HAL_RCC_DMA1_CLK_ENABLE();

			/* DMA1_Channel6_IRQn interrupt configuration */
			HAL_NVIC_SetPriority(DMA1_Channel6_IRQn, 0, 0);
			HAL_NVIC_EnableIRQ(DMA1_Channel6_IRQn);
			/* DMA1_Channel7_IRQn interrupt configuration */
			HAL_NVIC_SetPriority(DMA1_Channel7_IRQn, 0, 0);
			HAL_NVIC_EnableIRQ(DMA1_Channel7_IRQn);
				
			/* USART2 init function */
			MX_USART2_UART_Init();
	}
	else if(uart_id==USER_UART1)
	{
		 /* DMA controller clock enable */
		 __HAL_RCC_DMA1_CLK_ENABLE();

		 /* DMA interrupt init */
		 /* DMA1_Channel4_IRQn interrupt configuration */
		 HAL_NVIC_SetPriority(DMA1_Channel4_IRQn, 0, 0);
		 HAL_NVIC_EnableIRQ(DMA1_Channel4_IRQn);
		 /* DMA1_Channel5_IRQn interrupt configuration */
		 HAL_NVIC_SetPriority(DMA1_Channel5_IRQn, 0, 0);
		 HAL_NVIC_EnableIRQ(DMA1_Channel5_IRQn);
		 /* USART1 init function */
		 MX_USART1_UART_Init();
	}
	else //如果输的是其他参数 默认是开启USART1
	{
		 /* DMA controller clock enable */
		 __HAL_RCC_DMA1_CLK_ENABLE();

		 /* DMA interrupt init */
		 /* DMA1_Channel4_IRQn interrupt configuration */
		 HAL_NVIC_SetPriority(DMA1_Channel4_IRQn, 0, 0);
		 HAL_NVIC_EnableIRQ(DMA1_Channel4_IRQn);
		 /* DMA1_Channel5_IRQn interrupt configuration */
		 HAL_NVIC_SetPriority(DMA1_Channel5_IRQn, 0, 0);
		 HAL_NVIC_EnableIRQ(DMA1_Channel5_IRQn);
		 /* USART1 init function */
		 MX_USART1_UART_Init();
	}
}

/**
   * @brief 串口发送数据
   * @param uart_id 发送的串口ID
   * @param send_data 要发送数据的指针
   * @param size  要发送数据的大小
   */

void write_uart(uint8_t uart_id, uint8_t *send_data, uint16_t size)
{
	if(uart_id == USER_UART1)
	{
		HAL_UART_Transmit_DMA(&huart1 ,(uint8_t *)send_data ,size);
	}
	if(uart_id == USER_UART2)
	{
		HAL_UART_Transmit_DMA(&huart2 ,(uint8_t *)send_data ,size);
	}
}




/**
   * @brief 选择开启串口接收的方式
   * @param uart_id 选择串口
   * @param recv_data 数据存放到哪
   * @param size 最大长度
		RECEIVE_MODE： 在头文件中，如果这个值为0 则开启的是dma接收模式  如果为1 开启的是IT接收模式
   */
void uartReceiveStart(uint8_t uart_id, uint8_t *recv_data, uint16_t size)
{
#if RECEIVE_MODE==0
	total_length=size;
	if(uart_id == USER_UART1)
	{
		dmaRxBuff1 = recv_data;
		__HAL_UART_ENABLE_IT(&huart1, UART_IT_IDLE);
		HAL_UART_Receive_DMA(&huart1, (uint8_t*)dmaRxBuff1, size);
	}
	if(uart_id == USER_UART2)
	{
		dmaRxBuff2 = recv_data;
		__HAL_UART_ENABLE_IT(&huart2, UART_IT_IDLE);
		HAL_UART_Receive_DMA(&huart2, (uint8_t*)dmaRxBuff2, size);
	}
#elif RECEIVE_MODE==1
	total_length=size;
	if(uart_id == USER_UART1)
	{
		HAL_UART_Receive_IT(&huart1,(uint8_t*)aRxBuff,1);
	}
	if(uart_id == USER_UART2)
	{
		HAL_UART_Receive_IT(&huart2,(uint8_t*)aRxBuff,1);
	}
#endif
}



/**
   * @brief 开启接串口后的接收回调函数
   * @param
   */

#if RECEIVE_MODE==1
void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
{
	if(Uart1_Rx_Cnt >= 255)  //溢出判断
	{
		Uart1_Rx_Cnt = 0;
		memset(itRxBuff,0x00,sizeof(itRxBuff));
	}
	else
	{
		itRxBuff[Uart1_Rx_Cnt++]= aRxBuff[0];   //接收数据转存
		if((itRxBuff[Uart1_Rx_Cnt-1] == 0x0A)&&(itRxBuff[Uart1_Rx_Cnt-2] == 0x0D)) //判断结束位
		{
           
			Uart1_Rx_Cnt = 0;
			memset(itRxBuff,0x00,sizeof(itRxBuff)); //清空数组
		}
	}
	HAL_UART_Receive_IT(&huart1,(uint8_t*)aRxBuff,1);
}

#endif
#if RECEIVE_MODE==0   //将下面这一部分把中断服务函数替换掉
/*
void USART1_IRQHandler(void)
{
	if(RESET != __HAL_UART_GET_FLAG(&huart1, UART_FLAG_IDLE))   //判断是否是空闲中斿
	{
		__HAL_UART_CLEAR_IDLEFLAG(&huart1);                       //清除空闲中断标志
		uint8_t data_length  = total_length - __HAL_DMA_GET_COUNTER(&hdma_usart1_rx);
		HAL_UART_DMAStop(&huart1);                                //停止本次DMA传输    
		   //计算接收到的数据长度
	//	HAL_UART_Transmit(&huart1,receive_buff1,data_length,0x200);             //测试函数：将接收到的数据打印出去
	//	memset(receive_buff1,0,data_length);                                            
	//	data_length = 0;
		HAL_UART_Receive_DMA(&huart1, (uint8_t*)dmaRxBuff1, total_length);                    //重启弿始DMA传输

	}
  HAL_UART_IRQHandler(&huart1);
	//printf("in1");

}
*/
	
#endif

/**
   * @brief 重定向，可以使用printf，sprintf
 
   * @param
   */
int fputc(int ch, FILE *f)
{
	/* 发送一个字节数据到串口DEBUG_USART */
	HAL_UART_Transmit(&huart1, (uint8_t *)&ch, 1, 10000);	
	
	return (ch);
}


int fgetc(FILE *f)
{		
	int ch;
	HAL_UART_Receive(&huart1, (uint8_t *)&ch, 1, 10000);
	return (ch);
}
/* USER CODE END 1 */
